Home / 78,732,089.20-118,098,133.80-40,397,478.40

Finding the Fourth Proportional to 78,732,089.20, 118,098,133.80 and 40,397,478.40

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Solution

The fourth proportional to 78,732,089.20, 118,098,133.80 and 40,397,478.40 is: 60,596,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,089.20 : 118,098,133.80 = 40,397,478.40 : x
  2. Step 2: Convert to fraction form
    78,732,089.20/118,098,133.80 = 40,397,478.40/x
  3. Step 3: Cross multiply
    78,732,089.20x = 118,098,133.80 × 40,397,478.40
  4. Step 4: Simplify right side
    78,732,089.20x = 4,770,866,809,265,810
  5. Step 5: Solve for x
    x = 4,770,866,809,265,810/78,732,089.20
  6. Step 6: Final answer
    x = 60,596,217.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.