Home / 61,938.35-85,510.39-40,779.13

Finding the Fourth Proportional to 61,938.35, 85,510.39 and 40,779.13

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Solution

The fourth proportional to 61,938.35, 85,510.39 and 40,779.13 is: 56,298.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,938.35 : 85,510.39 = 40,779.13 : x
  2. Step 2: Convert to fraction form
    61,938.35/85,510.39 = 40,779.13/x
  3. Step 3: Cross multiply
    61,938.35x = 85,510.39 × 40,779.13
  4. Step 4: Simplify right side
    61,938.35x = 3,487,039,310.16
  5. Step 5: Solve for x
    x = 3,487,039,310.16/61,938.35
  6. Step 6: Final answer
    x = 56,298.55

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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.