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Finding the Fourth Proportional to 69,970.32, 104,999.04 and 30,528

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Solution

The fourth proportional to 69,970.32, 104,999.04 and 30,528 is: 45,811.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,970.32 : 104,999.04 = 30,528 : x
  2. Step 2: Convert to fraction form
    69,970.32/104,999.04 = 30,528/x
  3. Step 3: Cross multiply
    69,970.32x = 104,999.04 × 30,528
  4. Step 4: Simplify right side
    69,970.32x = 3,205,410,693.12
  5. Step 5: Solve for x
    x = 3,205,410,693.12/69,970.32
  6. Step 6: Final answer
    x = 45,811.01

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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.