Home / 105,677.64-145,838.88-57,931.02

Finding the Fourth Proportional to 105,677.64, 145,838.88 and 57,931.02

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Solution

The fourth proportional to 105,677.64, 145,838.88 and 57,931.02 is: 79,946.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,677.64 : 145,838.88 = 57,931.02 : x
  2. Step 2: Convert to fraction form
    105,677.64/145,838.88 = 57,931.02/x
  3. Step 3: Cross multiply
    105,677.64x = 145,838.88 × 57,931.02
  4. Step 4: Simplify right side
    105,677.64x = 8,448,595,074.06
  5. Step 5: Solve for x
    x = 8,448,595,074.06/105,677.64
  6. Step 6: Final answer
    x = 79,946.86

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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.