Home / 105,681.06-145,838.48-57,934.40

Finding the Fourth Proportional to 105,681.06, 145,838.48 and 57,934.40

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Solution

The fourth proportional to 105,681.06, 145,838.48 and 57,934.40 is: 79,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,681.06 : 145,838.48 = 57,934.40 : x
  2. Step 2: Convert to fraction form
    105,681.06/145,838.48 = 57,934.40/x
  3. Step 3: Cross multiply
    105,681.06x = 145,838.48 × 57,934.40
  4. Step 4: Simplify right side
    105,681.06x = 8,449,063,816.85
  5. Step 5: Solve for x
    x = 8,449,063,816.85/105,681.06
  6. Step 6: Final answer
    x = 79,948.70

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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.