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Finding the Fourth Proportional to 70,878.30, 97,812.06 and 39,047.24

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Solution

The fourth proportional to 70,878.30, 97,812.06 and 39,047.24 is: 53,885.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,878.30 : 97,812.06 = 39,047.24 : x
  2. Step 2: Convert to fraction form
    70,878.30/97,812.06 = 39,047.24/x
  3. Step 3: Cross multiply
    70,878.30x = 97,812.06 × 39,047.24
  4. Step 4: Simplify right side
    70,878.30x = 3,819,290,981.71
  5. Step 5: Solve for x
    x = 3,819,290,981.71/70,878.30
  6. Step 6: Final answer
    x = 53,885.19

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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.