Home / 78,897,819.40-118,346,729.10-70,331,777.80

Finding the Fourth Proportional to 78,897,819.40, 118,346,729.10 and 70,331,777.80

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Solution

The fourth proportional to 78,897,819.40, 118,346,729.10 and 70,331,777.80 is: 105,497,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,897,819.40 : 118,346,729.10 = 70,331,777.80 : x
  2. Step 2: Convert to fraction form
    78,897,819.40/118,346,729.10 = 70,331,777.80/x
  3. Step 3: Cross multiply
    78,897,819.40x = 118,346,729.10 × 70,331,777.80
  4. Step 4: Simplify right side
    78,897,819.40x = 8,323,535,854,417,993
  5. Step 5: Solve for x
    x = 8,323,535,854,417,993/78,897,819.40
  6. Step 6: Final answer
    x = 105,497,666.70

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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.