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Finding the Fourth Proportional to 112,046, 154,623.48 and 61,745

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Solution

The fourth proportional to 112,046, 154,623.48 and 61,745 is: 85,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,046 : 154,623.48 = 61,745 : x
  2. Step 2: Convert to fraction form
    112,046/154,623.48 = 61,745/x
  3. Step 3: Cross multiply
    112,046x = 154,623.48 × 61,745
  4. Step 4: Simplify right side
    112,046x = 9,547,226,772.60
  5. Step 5: Solve for x
    x = 9,547,226,772.60/112,046
  6. Step 6: Final answer
    x = 85,208.10

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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.