Home / 105,587.54-145,711.29-57,840.77

Finding the Fourth Proportional to 105,587.54, 145,711.29 and 57,840.77

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Solution

The fourth proportional to 105,587.54, 145,711.29 and 57,840.77 is: 79,820.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,587.54 : 145,711.29 = 57,840.77 : x
  2. Step 2: Convert to fraction form
    105,587.54/145,711.29 = 57,840.77/x
  3. Step 3: Cross multiply
    105,587.54x = 145,711.29 × 57,840.77
  4. Step 4: Simplify right side
    105,587.54x = 8,428,052,482.74
  5. Step 5: Solve for x
    x = 8,428,052,482.74/105,587.54
  6. Step 6: Final answer
    x = 79,820.53

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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.