Home / 81,038.04-111,698.64-54,170.74

Finding the Fourth Proportional to 81,038.04, 111,698.64 and 54,170.74

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Solution

The fourth proportional to 81,038.04, 111,698.64 and 54,170.74 is: 74,666.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,038.04 : 111,698.64 = 54,170.74 : x
  2. Step 2: Convert to fraction form
    81,038.04/111,698.64 = 54,170.74/x
  3. Step 3: Cross multiply
    81,038.04x = 111,698.64 × 54,170.74
  4. Step 4: Simplify right side
    81,038.04x = 6,050,798,125.42
  5. Step 5: Solve for x
    x = 6,050,798,125.42/81,038.04
  6. Step 6: Final answer
    x = 74,666.15

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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.