Home / 65,515,800-90,411,549.60-36,148,960.32

Finding the Fourth Proportional to 65,515,800, 90,411,549.60 and 36,148,960.32

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Solution

The fourth proportional to 65,515,800, 90,411,549.60 and 36,148,960.32 is: 49,885,424.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,515,800 : 90,411,549.60 = 36,148,960.32 : x
  2. Step 2: Convert to fraction form
    65,515,800/90,411,549.60 = 36,148,960.32/x
  3. Step 3: Cross multiply
    65,515,800x = 90,411,549.60 × 36,148,960.32
  4. Step 4: Simplify right side
    65,515,800x = 3,268,283,518,960,111.50
  5. Step 5: Solve for x
    x = 3,268,283,518,960,111.50/65,515,800
  6. Step 6: Final answer
    x = 49,885,424.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.