Home / 47,438.48-65,455.80-28,576.64

Finding the Fourth Proportional to 47,438.48, 65,455.80 and 28,576.64

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Solution

The fourth proportional to 47,438.48, 65,455.80 and 28,576.64 is: 39,430.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,438.48 : 65,455.80 = 28,576.64 : x
  2. Step 2: Convert to fraction form
    47,438.48/65,455.80 = 28,576.64/x
  3. Step 3: Cross multiply
    47,438.48x = 65,455.80 × 28,576.64
  4. Step 4: Simplify right side
    47,438.48x = 1,870,506,832.51
  5. Step 5: Solve for x
    x = 1,870,506,832.51/47,438.48
  6. Step 6: Final answer
    x = 39,430.16

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1.5x scale

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.