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Finding the Fourth Proportional to 50,762.68, 70,050.72 and 28,101.72

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Solution

The fourth proportional to 50,762.68, 70,050.72 and 28,101.72 is: 38,779.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,762.68 : 70,050.72 = 28,101.72 : x
  2. Step 2: Convert to fraction form
    50,762.68/70,050.72 = 28,101.72/x
  3. Step 3: Cross multiply
    50,762.68x = 70,050.72 × 28,101.72
  4. Step 4: Simplify right side
    50,762.68x = 1,968,545,719.24
  5. Step 5: Solve for x
    x = 1,968,545,719.24/50,762.68
  6. Step 6: Final answer
    x = 38,779.39

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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.