Home / 55,931.08-77,186.34-30,438.88

Finding the Fourth Proportional to 55,931.08, 77,186.34 and 30,438.88

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Solution

The fourth proportional to 55,931.08, 77,186.34 and 30,438.88 is: 42,006.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,931.08 : 77,186.34 = 30,438.88 : x
  2. Step 2: Convert to fraction form
    55,931.08/77,186.34 = 30,438.88/x
  3. Step 3: Cross multiply
    55,931.08x = 77,186.34 × 30,438.88
  4. Step 4: Simplify right side
    55,931.08x = 2,349,465,740.90
  5. Step 5: Solve for x
    x = 2,349,465,740.90/55,931.08
  6. Step 6: Final answer
    x = 42,006.44

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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.