Home / 105,577.55-145,697.51-57,830.75

Finding the Fourth Proportional to 105,577.55, 145,697.51 and 57,830.75

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Solution

The fourth proportional to 105,577.55, 145,697.51 and 57,830.75 is: 79,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,577.55 : 145,697.51 = 57,830.75 : x
  2. Step 2: Convert to fraction form
    105,577.55/145,697.51 = 57,830.75/x
  3. Step 3: Cross multiply
    105,577.55x = 145,697.51 × 57,830.75
  4. Step 4: Simplify right side
    105,577.55x = 8,425,796,276.43
  5. Step 5: Solve for x
    x = 8,425,796,276.43/105,577.55
  6. Step 6: Final answer
    x = 79,806.70

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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.