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Finding the Fourth Proportional to 74,748,278.80, 112,001,695.80 and 42,303,696.40

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Solution

The fourth proportional to 74,748,278.80, 112,001,695.80 and 42,303,696.40 is: 63,387,221.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,748,278.80 : 112,001,695.80 = 42,303,696.40 : x
  2. Step 2: Convert to fraction form
    74,748,278.80/112,001,695.80 = 42,303,696.40/x
  3. Step 3: Cross multiply
    74,748,278.80x = 112,001,695.80 × 42,303,696.40
  4. Step 4: Simplify right side
    74,748,278.80x = 4,738,085,735,408,355
  5. Step 5: Solve for x
    x = 4,738,085,735,408,355/74,748,278.80
  6. Step 6: Final answer
    x = 63,387,221.91

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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.