Home / 91,030.13-125,570.12-56,979.50

Finding the Fourth Proportional to 91,030.13, 125,570.12 and 56,979.50

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Solution

The fourth proportional to 91,030.13, 125,570.12 and 56,979.50 is: 78,599.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,030.13 : 125,570.12 = 56,979.50 : x
  2. Step 2: Convert to fraction form
    91,030.13/125,570.12 = 56,979.50/x
  3. Step 3: Cross multiply
    91,030.13x = 125,570.12 × 56,979.50
  4. Step 4: Simplify right side
    91,030.13x = 7,154,923,108.91
  5. Step 5: Solve for x
    x = 7,154,923,108.91/91,030.13
  6. Step 6: Final answer
    x = 78,599.51

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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.