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Finding the Fourth Proportional to 62,970.48, 86,900.40 and 34,290.99

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Solution

The fourth proportional to 62,970.48, 86,900.40 and 34,290.99 is: 47,322.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,970.48 : 86,900.40 = 34,290.99 : x
  2. Step 2: Convert to fraction form
    62,970.48/86,900.40 = 34,290.99/x
  3. Step 3: Cross multiply
    62,970.48x = 86,900.40 × 34,290.99
  4. Step 4: Simplify right side
    62,970.48x = 2,979,900,747.40
  5. Step 5: Solve for x
    x = 2,979,900,747.40/62,970.48
  6. Step 6: Final answer
    x = 47,322.19

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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.