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Finding the Fourth Proportional to 66,465,714.80, 99,698,572.20 and 40,935,551.60

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Solution

The fourth proportional to 66,465,714.80, 99,698,572.20 and 40,935,551.60 is: 61,403,327.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,465,714.80 : 99,698,572.20 = 40,935,551.60 : x
  2. Step 2: Convert to fraction form
    66,465,714.80/99,698,572.20 = 40,935,551.60/x
  3. Step 3: Cross multiply
    66,465,714.80x = 99,698,572.20 × 40,935,551.60
  4. Step 4: Simplify right side
    66,465,714.80x = 4,081,216,046,739,426
  5. Step 5: Solve for x
    x = 4,081,216,046,739,426/66,465,714.80
  6. Step 6: Final answer
    x = 61,403,327.40

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1.5x scale

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.