Home / 79,681,931.40-119,522,897.10-72,879,486.60

Finding the Fourth Proportional to 79,681,931.40, 119,522,897.10 and 72,879,486.60

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Solution

The fourth proportional to 79,681,931.40, 119,522,897.10 and 72,879,486.60 is: 109,319,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,681,931.40 : 119,522,897.10 = 72,879,486.60 : x
  2. Step 2: Convert to fraction form
    79,681,931.40/119,522,897.10 = 72,879,486.60/x
  3. Step 3: Cross multiply
    79,681,931.40x = 119,522,897.10 × 72,879,486.60
  4. Step 4: Simplify right side
    79,681,931.40x = 8,710,767,377,592,628
  5. Step 5: Solve for x
    x = 8,710,767,377,592,628/79,681,931.40
  6. Step 6: Final answer
    x = 109,319,229.90

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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.