Home / 42,911.10-64,307.40-30,969.68

Finding the Fourth Proportional to 42,911.10, 64,307.40 and 30,969.68

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Solution

The fourth proportional to 42,911.10, 64,307.40 and 30,969.68 is: 46,411.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,911.10 : 64,307.40 = 30,969.68 : x
  2. Step 2: Convert to fraction form
    42,911.10/64,307.40 = 30,969.68/x
  3. Step 3: Cross multiply
    42,911.10x = 64,307.40 × 30,969.68
  4. Step 4: Simplify right side
    42,911.10x = 1,991,579,278.10
  5. Step 5: Solve for x
    x = 1,991,579,278.10/42,911.10
  6. Step 6: Final answer
    x = 46,411.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.