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Finding the Fourth Proportional to 92,878.17, 128,170.74 and 50,437

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Solution

The fourth proportional to 92,878.17, 128,170.74 and 50,437 is: 69,602.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,878.17 : 128,170.74 = 50,437 : x
  2. Step 2: Convert to fraction form
    92,878.17/128,170.74 = 50,437/x
  3. Step 3: Cross multiply
    92,878.17x = 128,170.74 × 50,437
  4. Step 4: Simplify right side
    92,878.17x = 6,464,547,613.38
  5. Step 5: Solve for x
    x = 6,464,547,613.38/92,878.17
  6. Step 6: Final answer
    x = 69,602.44

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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.