Home / 56,995.20-78,680.16-42,495.66

Finding the Fourth Proportional to 56,995.20, 78,680.16 and 42,495.66

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Solution

The fourth proportional to 56,995.20, 78,680.16 and 42,495.66 is: 58,663.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,995.20 : 78,680.16 = 42,495.66 : x
  2. Step 2: Convert to fraction form
    56,995.20/78,680.16 = 42,495.66/x
  3. Step 3: Cross multiply
    56,995.20x = 78,680.16 × 42,495.66
  4. Step 4: Simplify right side
    56,995.20x = 3,343,565,328.11
  5. Step 5: Solve for x
    x = 3,343,565,328.11/56,995.20
  6. Step 6: Final answer
    x = 58,663.98

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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.