Home / 88,120.32-121,565.76-61,326.72

Finding the Fourth Proportional to 88,120.32, 121,565.76 and 61,326.72

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Solution

The fourth proportional to 88,120.32, 121,565.76 and 61,326.72 is: 84,602.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,120.32 : 121,565.76 = 61,326.72 : x
  2. Step 2: Convert to fraction form
    88,120.32/121,565.76 = 61,326.72/x
  3. Step 3: Cross multiply
    88,120.32x = 121,565.76 × 61,326.72
  4. Step 4: Simplify right side
    88,120.32x = 7,455,229,325.11
  5. Step 5: Solve for x
    x = 7,455,229,325.11/88,120.32
  6. Step 6: Final answer
    x = 84,602.84

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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.