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Finding the Fourth Proportional to 70,309.95, 97,029.99 and 38,478.81

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Solution

The fourth proportional to 70,309.95, 97,029.99 and 38,478.81 is: 53,101.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,309.95 : 97,029.99 = 38,478.81 : x
  2. Step 2: Convert to fraction form
    70,309.95/97,029.99 = 38,478.81/x
  3. Step 3: Cross multiply
    70,309.95x = 97,029.99 × 38,478.81
  4. Step 4: Simplify right side
    70,309.95x = 3,733,598,549.51
  5. Step 5: Solve for x
    x = 3,733,598,549.51/70,309.95
  6. Step 6: Final answer
    x = 53,101.99

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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.