Home / 78,732,483.90-118,098,725.85-72,992,921.10

Finding the Fourth Proportional to 78,732,483.90, 118,098,725.85 and 72,992,921.10

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Solution

The fourth proportional to 78,732,483.90, 118,098,725.85 and 72,992,921.10 is: 109,489,381.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,483.90 : 118,098,725.85 = 72,992,921.10 : x
  2. Step 2: Convert to fraction form
    78,732,483.90/118,098,725.85 = 72,992,921.10/x
  3. Step 3: Cross multiply
    78,732,483.90x = 118,098,725.85 × 72,992,921.10
  4. Step 4: Simplify right side
    78,732,483.90x = 8,620,370,977,979,579
  5. Step 5: Solve for x
    x = 8,620,370,977,979,579/78,732,483.90
  6. Step 6: Final answer
    x = 109,489,381.65

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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.