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Finding the Fourth Proportional to 105,056.80, 157,606.80 and 34,986.40

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Solution

The fourth proportional to 105,056.80, 157,606.80 and 34,986.40 is: 52,486.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,056.80 : 157,606.80 = 34,986.40 : x
  2. Step 2: Convert to fraction form
    105,056.80/157,606.80 = 34,986.40/x
  3. Step 3: Cross multiply
    105,056.80x = 157,606.80 × 34,986.40
  4. Step 4: Simplify right side
    105,056.80x = 5,514,094,547.52
  5. Step 5: Solve for x
    x = 5,514,094,547.52/105,056.80
  6. Step 6: Final answer
    x = 52,486.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.