Home / 90,310.21-124,688.36-56,332.33

Finding the Fourth Proportional to 90,310.21, 124,688.36 and 56,332.33

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Solution

The fourth proportional to 90,310.21, 124,688.36 and 56,332.33 is: 77,776.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,310.21 : 124,688.36 = 56,332.33 : x
  2. Step 2: Convert to fraction form
    90,310.21/124,688.36 = 56,332.33/x
  3. Step 3: Cross multiply
    90,310.21x = 124,688.36 × 56,332.33
  4. Step 4: Simplify right side
    90,310.21x = 7,023,985,842.68
  5. Step 5: Solve for x
    x = 7,023,985,842.68/90,310.21
  6. Step 6: Final answer
    x = 77,776.21

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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.