Home / 47,606.40-65,664-28,719.36

Finding the Fourth Proportional to 47,606.40, 65,664 and 28,719.36

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Solution

The fourth proportional to 47,606.40, 65,664 and 28,719.36 is: 39,612.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,606.40 : 65,664 = 28,719.36 : x
  2. Step 2: Convert to fraction form
    47,606.40/65,664 = 28,719.36/x
  3. Step 3: Cross multiply
    47,606.40x = 65,664 × 28,719.36
  4. Step 4: Simplify right side
    47,606.40x = 1,885,828,055.04
  5. Step 5: Solve for x
    x = 1,885,828,055.04/47,606.40
  6. Step 6: Final answer
    x = 39,612.91

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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.