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Finding the Fourth Proportional to 70,316.24, 105,460.92 and 21,068.24

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Solution

The fourth proportional to 70,316.24, 105,460.92 and 21,068.24 is: 31,598.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,316.24 : 105,460.92 = 21,068.24 : x
  2. Step 2: Convert to fraction form
    70,316.24/105,460.92 = 21,068.24/x
  3. Step 3: Cross multiply
    70,316.24x = 105,460.92 × 21,068.24
  4. Step 4: Simplify right side
    70,316.24x = 2,221,875,973.18
  5. Step 5: Solve for x
    x = 2,221,875,973.18/70,316.24
  6. Step 6: Final answer
    x = 31,598.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.