Home / 90,363.04-124,686.48-56,805.28

Finding the Fourth Proportional to 90,363.04, 124,686.48 and 56,805.28

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Solution

The fourth proportional to 90,363.04, 124,686.48 and 56,805.28 is: 78,382.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,363.04 : 124,686.48 = 56,805.28 : x
  2. Step 2: Convert to fraction form
    90,363.04/124,686.48 = 56,805.28/x
  3. Step 3: Cross multiply
    90,363.04x = 124,686.48 × 56,805.28
  4. Step 4: Simplify right side
    90,363.04x = 7,082,850,408.61
  5. Step 5: Solve for x
    x = 7,082,850,408.61/90,363.04
  6. Step 6: Final answer
    x = 78,382.16

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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.