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Finding the Fourth Proportional to 74,567.76, 102,900.47 and 42,714.51

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Solution

The fourth proportional to 74,567.76, 102,900.47 and 42,714.51 is: 58,944.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,567.76 : 102,900.47 = 42,714.51 : x
  2. Step 2: Convert to fraction form
    74,567.76/102,900.47 = 42,714.51/x
  3. Step 3: Cross multiply
    74,567.76x = 102,900.47 × 42,714.51
  4. Step 4: Simplify right side
    74,567.76x = 4,395,343,154.82
  5. Step 5: Solve for x
    x = 4,395,343,154.82/74,567.76
  6. Step 6: Final answer
    x = 58,944.28

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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.