Home / 90,561.04-125,007.80-77,762.84

Finding the Fourth Proportional to 90,561.04, 125,007.80 and 77,762.84

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Solution

The fourth proportional to 90,561.04, 125,007.80 and 77,762.84 is: 107,341.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,561.04 : 125,007.80 = 77,762.84 : x
  2. Step 2: Convert to fraction form
    90,561.04/125,007.80 = 77,762.84/x
  3. Step 3: Cross multiply
    90,561.04x = 125,007.80 × 77,762.84
  4. Step 4: Simplify right side
    90,561.04x = 9,720,961,550.15
  5. Step 5: Solve for x
    x = 9,720,961,550.15/90,561.04
  6. Step 6: Final answer
    x = 107,341.54

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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.