Home / 90,656.32-125,004.86-61,980.66

Finding the Fourth Proportional to 90,656.32, 125,004.86 and 61,980.66

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Solution

The fourth proportional to 90,656.32, 125,004.86 and 61,980.66 is: 85,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,656.32 : 125,004.86 = 61,980.66 : x
  2. Step 2: Convert to fraction form
    90,656.32/125,004.86 = 61,980.66/x
  3. Step 3: Cross multiply
    90,656.32x = 125,004.86 × 61,980.66
  4. Step 4: Simplify right side
    90,656.32x = 7,747,883,726.01
  5. Step 5: Solve for x
    x = 7,747,883,726.01/90,656.32
  6. Step 6: Final answer
    x = 85,464.35

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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.