Home / 72,150.10-99,565.65-39,886.08

Finding the Fourth Proportional to 72,150.10, 99,565.65 and 39,886.08

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Solution

The fourth proportional to 72,150.10, 99,565.65 and 39,886.08 is: 55,041.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,150.10 : 99,565.65 = 39,886.08 : x
  2. Step 2: Convert to fraction form
    72,150.10/99,565.65 = 39,886.08/x
  3. Step 3: Cross multiply
    72,150.10x = 99,565.65 × 39,886.08
  4. Step 4: Simplify right side
    72,150.10x = 3,971,283,481.15
  5. Step 5: Solve for x
    x = 3,971,283,481.15/72,150.10
  6. Step 6: Final answer
    x = 55,041.97

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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.