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Finding the Fourth Proportional to 56,662,981.60, 84,994,472.40 and 18,351,990.40

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Solution

The fourth proportional to 56,662,981.60, 84,994,472.40 and 18,351,990.40 is: 27,527,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,662,981.60 : 84,994,472.40 = 18,351,990.40 : x
  2. Step 2: Convert to fraction form
    56,662,981.60/84,994,472.40 = 18,351,990.40/x
  3. Step 3: Cross multiply
    56,662,981.60x = 84,994,472.40 × 18,351,990.40
  4. Step 4: Simplify right side
    56,662,981.60x = 1,559,817,741,537,865
  5. Step 5: Solve for x
    x = 1,559,817,741,537,865/56,662,981.60
  6. Step 6: Final answer
    x = 27,527,985.60

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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.