Home / 78,058.02-107,708.52-45,780.42

Finding the Fourth Proportional to 78,058.02, 107,708.52 and 45,780.42

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Solution

The fourth proportional to 78,058.02, 107,708.52 and 45,780.42 is: 63,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,058.02 : 107,708.52 = 45,780.42 : x
  2. Step 2: Convert to fraction form
    78,058.02/107,708.52 = 45,780.42/x
  3. Step 3: Cross multiply
    78,058.02x = 107,708.52 × 45,780.42
  4. Step 4: Simplify right side
    78,058.02x = 4,930,941,283.18
  5. Step 5: Solve for x
    x = 4,930,941,283.18/78,058.02
  6. Step 6: Final answer
    x = 63,170.21

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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.