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Finding the Fourth Proportional to 61,641.95, 85,038.80 and 36,135.36

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Solution

The fourth proportional to 61,641.95, 85,038.80 and 36,135.36 is: 49,850.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,641.95 : 85,038.80 = 36,135.36 : x
  2. Step 2: Convert to fraction form
    61,641.95/85,038.80 = 36,135.36/x
  3. Step 3: Cross multiply
    61,641.95x = 85,038.80 × 36,135.36
  4. Step 4: Simplify right side
    61,641.95x = 3,072,907,471.29
  5. Step 5: Solve for x
    x = 3,072,907,471.29/61,641.95
  6. Step 6: Final answer
    x = 49,850.92

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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.