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Finding the Fourth Proportional to 105,656.52, 145,810.08 and 57,908.88

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Solution

The fourth proportional to 105,656.52, 145,810.08 and 57,908.88 is: 79,916.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,656.52 : 145,810.08 = 57,908.88 : x
  2. Step 2: Convert to fraction form
    105,656.52/145,810.08 = 57,908.88/x
  3. Step 3: Cross multiply
    105,656.52x = 145,810.08 × 57,908.88
  4. Step 4: Simplify right side
    105,656.52x = 8,443,698,425.51
  5. Step 5: Solve for x
    x = 8,443,698,425.51/105,656.52
  6. Step 6: Final answer
    x = 79,916.49

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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.