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Finding the Fourth Proportional to 42,563,748.80, 63,854,954.40 and 13,804,990.40

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Solution

The fourth proportional to 42,563,748.80, 63,854,954.40 and 13,804,990.40 is: 20,710,512.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,563,748.80 : 63,854,954.40 = 13,804,990.40 : x
  2. Step 2: Convert to fraction form
    42,563,748.80/63,854,954.40 = 13,804,990.40/x
  3. Step 3: Cross multiply
    42,563,748.80x = 63,854,954.40 × 13,804,990.40
  4. Step 4: Simplify right side
    42,563,748.80x = 881,517,032,484,437.75
  5. Step 5: Solve for x
    x = 881,517,032,484,437.75/42,563,748.80
  6. Step 6: Final answer
    x = 20,710,512.05

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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.