Home / 31,004,863.68-42,742,364.40-21,808,966.08

Finding the Fourth Proportional to 31,004,863.68, 42,742,364.40 and 21,808,966.08

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Solution

The fourth proportional to 31,004,863.68, 42,742,364.40 and 21,808,966.08 is: 30,065,178.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,004,863.68 : 42,742,364.40 = 21,808,966.08 : x
  2. Step 2: Convert to fraction form
    31,004,863.68/42,742,364.40 = 21,808,966.08/x
  3. Step 3: Cross multiply
    31,004,863.68x = 42,742,364.40 × 21,808,966.08
  4. Step 4: Simplify right side
    31,004,863.68x = 932,166,775,378,599.50
  5. Step 5: Solve for x
    x = 932,166,775,378,599.50/31,004,863.68
  6. Step 6: Final answer
    x = 30,065,178.97

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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.