Home / 105,587.47-145,710.70-57,840.80

Finding the Fourth Proportional to 105,587.47, 145,710.70 and 57,840.80

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Solution

The fourth proportional to 105,587.47, 145,710.70 and 57,840.80 is: 79,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,587.47 : 145,710.70 = 57,840.80 : x
  2. Step 2: Convert to fraction form
    105,587.47/145,710.70 = 57,840.80/x
  3. Step 3: Cross multiply
    105,587.47x = 145,710.70 × 57,840.80
  4. Step 4: Simplify right side
    105,587.47x = 8,428,023,456.56
  5. Step 5: Solve for x
    x = 8,428,023,456.56/105,587.47
  6. Step 6: Final answer
    x = 79,820.30

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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.