Home / 78,730,646.40-118,095,969.60-48,339,964.80

Finding the Fourth Proportional to 78,730,646.40, 118,095,969.60 and 48,339,964.80

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Solution

The fourth proportional to 78,730,646.40, 118,095,969.60 and 48,339,964.80 is: 72,509,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,730,646.40 : 118,095,969.60 = 48,339,964.80 : x
  2. Step 2: Convert to fraction form
    78,730,646.40/118,095,969.60 = 48,339,964.80/x
  3. Step 3: Cross multiply
    78,730,646.40x = 118,095,969.60 × 48,339,964.80
  4. Step 4: Simplify right side
    78,730,646.40x = 5,708,755,013,485,869
  5. Step 5: Solve for x
    x = 5,708,755,013,485,869/78,730,646.40
  6. Step 6: Final answer
    x = 72,509,947.20

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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.