Home / 30,909,678.03-42,675,317.71-19,161,501.21

Finding the Fourth Proportional to 30,909,678.03, 42,675,317.71 and 19,161,501.21

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Solution

The fourth proportional to 30,909,678.03, 42,675,317.71 and 19,161,501.21 is: 26,455,246.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,909,678.03 : 42,675,317.71 = 19,161,501.21 : x
  2. Step 2: Convert to fraction form
    30,909,678.03/42,675,317.71 = 19,161,501.21/x
  3. Step 3: Cross multiply
    30,909,678.03x = 42,675,317.71 × 19,161,501.21
  4. Step 4: Simplify right side
    30,909,678.03x = 817,723,151,889,395.75
  5. Step 5: Solve for x
    x = 817,723,151,889,395.75/30,909,678.03
  6. Step 6: Final answer
    x = 26,455,246.51

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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.