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Finding the Fourth Proportional to 30,510.99, 45,640.13 and 28,644.75

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Solution

The fourth proportional to 30,510.99, 45,640.13 and 28,644.75 is: 42,848.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,510.99 : 45,640.13 = 28,644.75 : x
  2. Step 2: Convert to fraction form
    30,510.99/45,640.13 = 28,644.75/x
  3. Step 3: Cross multiply
    30,510.99x = 45,640.13 × 28,644.75
  4. Step 4: Simplify right side
    30,510.99x = 1,307,349,970.59
  5. Step 5: Solve for x
    x = 1,307,349,970.59/30,510.99
  6. Step 6: Final answer
    x = 42,848.49

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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.