Home / 88,931.80-122,742.30-57,140.44

Finding the Fourth Proportional to 88,931.80, 122,742.30 and 57,140.44

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Solution

The fourth proportional to 88,931.80, 122,742.30 and 57,140.44 is: 78,864.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,931.80 : 122,742.30 = 57,140.44 : x
  2. Step 2: Convert to fraction form
    88,931.80/122,742.30 = 57,140.44/x
  3. Step 3: Cross multiply
    88,931.80x = 122,742.30 × 57,140.44
  4. Step 4: Simplify right side
    88,931.80x = 7,013,549,028.61
  5. Step 5: Solve for x
    x = 7,013,549,028.61/88,931.80
  6. Step 6: Final answer
    x = 78,864.35

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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.