Home / 90,309.21-124,686.98-56,331.33

Finding the Fourth Proportional to 90,309.21, 124,686.98 and 56,331.33

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Solution

The fourth proportional to 90,309.21, 124,686.98 and 56,331.33 is: 77,774.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,309.21 : 124,686.98 = 56,331.33 : x
  2. Step 2: Convert to fraction form
    90,309.21/124,686.98 = 56,331.33/x
  3. Step 3: Cross multiply
    90,309.21x = 124,686.98 × 56,331.33
  4. Step 4: Simplify right side
    90,309.21x = 7,023,783,417.08
  5. Step 5: Solve for x
    x = 7,023,783,417.08/90,309.21
  6. Step 6: Final answer
    x = 77,774.83

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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.