Home / 78,853,510.80-118,280,266.20-51,643,731.60

Finding the Fourth Proportional to 78,853,510.80, 118,280,266.20 and 51,643,731.60

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Solution

The fourth proportional to 78,853,510.80, 118,280,266.20 and 51,643,731.60 is: 77,465,597.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,853,510.80 : 118,280,266.20 = 51,643,731.60 : x
  2. Step 2: Convert to fraction form
    78,853,510.80/118,280,266.20 = 51,643,731.60/x
  3. Step 3: Cross multiply
    78,853,510.80x = 118,280,266.20 × 51,643,731.60
  4. Step 4: Simplify right side
    78,853,510.80x = 6,108,434,321,209,352
  5. Step 5: Solve for x
    x = 6,108,434,321,209,352/78,853,510.80
  6. Step 6: Final answer
    x = 77,465,597.40

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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.