Home / 78,022.02-107,670.43-42,211.92

Finding the Fourth Proportional to 78,022.02, 107,670.43 and 42,211.92

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Solution

The fourth proportional to 78,022.02, 107,670.43 and 42,211.92 is: 58,252.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,022.02 : 107,670.43 = 42,211.92 : x
  2. Step 2: Convert to fraction form
    78,022.02/107,670.43 = 42,211.92/x
  3. Step 3: Cross multiply
    78,022.02x = 107,670.43 × 42,211.92
  4. Step 4: Simplify right side
    78,022.02x = 4,544,975,577.53
  5. Step 5: Solve for x
    x = 4,544,975,577.53/78,022.02
  6. Step 6: Final answer
    x = 58,252.47

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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.