Home / 78,765,421.60-118,092,145.20-30,224,519.20

Finding the Fourth Proportional to 78,765,421.60, 118,092,145.20 and 30,224,519.20

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Solution

The fourth proportional to 78,765,421.60, 118,092,145.20 and 30,224,519.20 is: 45,315,294.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,765,421.60 : 118,092,145.20 = 30,224,519.20 : x
  2. Step 2: Convert to fraction form
    78,765,421.60/118,092,145.20 = 30,224,519.20/x
  3. Step 3: Cross multiply
    78,765,421.60x = 118,092,145.20 × 30,224,519.20
  4. Step 4: Simplify right side
    78,765,421.60x = 3,569,278,309,966,588
  5. Step 5: Solve for x
    x = 3,569,278,309,966,588/78,765,421.60
  6. Step 6: Final answer
    x = 45,315,294.93

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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.