Home / 61,815.72-85,317.80-40,332.10

Finding the Fourth Proportional to 61,815.72, 85,317.80 and 40,332.10

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Solution

The fourth proportional to 61,815.72, 85,317.80 and 40,332.10 is: 55,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,815.72 : 85,317.80 = 40,332.10 : x
  2. Step 2: Convert to fraction form
    61,815.72/85,317.80 = 40,332.10/x
  3. Step 3: Cross multiply
    61,815.72x = 85,317.80 × 40,332.10
  4. Step 4: Simplify right side
    61,815.72x = 3,441,046,041.38
  5. Step 5: Solve for x
    x = 3,441,046,041.38/61,815.72
  6. Step 6: Final answer
    x = 55,666.20

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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.