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Finding the Fourth Proportional to 42,976,503.06, 64,471,752.99 and 12,687,427.86

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Solution

The fourth proportional to 42,976,503.06, 64,471,752.99 and 12,687,427.86 is: 19,033,207.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,976,503.06 : 64,471,752.99 = 12,687,427.86 : x
  2. Step 2: Convert to fraction form
    42,976,503.06/64,471,752.99 = 12,687,427.86/x
  3. Step 3: Cross multiply
    42,976,503.06x = 64,471,752.99 × 12,687,427.86
  4. Step 4: Simplify right side
    42,976,503.06x = 817,980,715,068,364.25
  5. Step 5: Solve for x
    x = 817,980,715,068,364.25/42,976,503.06
  6. Step 6: Final answer
    x = 19,033,207.84

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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.