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Finding the Fourth Proportional to 70,752, 97,637.76 and 40,944

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Solution

The fourth proportional to 70,752, 97,637.76 and 40,944 is: 56,502.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,752 : 97,637.76 = 40,944 : x
  2. Step 2: Convert to fraction form
    70,752/97,637.76 = 40,944/x
  3. Step 3: Cross multiply
    70,752x = 97,637.76 × 40,944
  4. Step 4: Simplify right side
    70,752x = 3,997,680,445.44
  5. Step 5: Solve for x
    x = 3,997,680,445.44/70,752
  6. Step 6: Final answer
    x = 56,502.72

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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.