Home / 90,108.79-124,345.15-49,820.13

Finding the Fourth Proportional to 90,108.79, 124,345.15 and 49,820.13

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Solution

The fourth proportional to 90,108.79, 124,345.15 and 49,820.13 is: 68,749.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,108.79 : 124,345.15 = 49,820.13 : x
  2. Step 2: Convert to fraction form
    90,108.79/124,345.15 = 49,820.13/x
  3. Step 3: Cross multiply
    90,108.79x = 124,345.15 × 49,820.13
  4. Step 4: Simplify right side
    90,108.79x = 6,194,891,413.32
  5. Step 5: Solve for x
    x = 6,194,891,413.32/90,108.79
  6. Step 6: Final answer
    x = 68,749.03

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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.