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Finding the Fourth Proportional to 64,709.51, 97,064.34 and 20,340.14

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Solution

The fourth proportional to 64,709.51, 97,064.34 and 20,340.14 is: 30,510.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,709.51 : 97,064.34 = 20,340.14 : x
  2. Step 2: Convert to fraction form
    64,709.51/97,064.34 = 20,340.14/x
  3. Step 3: Cross multiply
    64,709.51x = 97,064.34 × 20,340.14
  4. Step 4: Simplify right side
    64,709.51x = 1,974,302,162.91
  5. Step 5: Solve for x
    x = 1,974,302,162.91/64,709.51
  6. Step 6: Final answer
    x = 30,510.23

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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.