Home / 47,686.16-65,802.40-28,565.60

Finding the Fourth Proportional to 47,686.16, 65,802.40 and 28,565.60

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Solution

The fourth proportional to 47,686.16, 65,802.40 and 28,565.60 is: 39,417.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,686.16 : 65,802.40 = 28,565.60 : x
  2. Step 2: Convert to fraction form
    47,686.16/65,802.40 = 28,565.60/x
  3. Step 3: Cross multiply
    47,686.16x = 65,802.40 × 28,565.60
  4. Step 4: Simplify right side
    47,686.16x = 1,879,685,130.53
  5. Step 5: Solve for x
    x = 1,879,685,130.53/47,686.16
  6. Step 6: Final answer
    x = 39,417.83

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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.