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Finding the Fourth Proportional to 70,871.41, 97,802.78 and 39,040.23

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Solution

The fourth proportional to 70,871.41, 97,802.78 and 39,040.23 is: 53,875.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,871.41 : 97,802.78 = 39,040.23 : x
  2. Step 2: Convert to fraction form
    70,871.41/97,802.78 = 39,040.23/x
  3. Step 3: Cross multiply
    70,871.41x = 97,802.78 × 39,040.23
  4. Step 4: Simplify right side
    70,871.41x = 3,818,243,025.84
  5. Step 5: Solve for x
    x = 3,818,243,025.84/70,871.41
  6. Step 6: Final answer
    x = 53,875.65

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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.