Home / 78,742,779.18-108,665,993.97-45,710,681.10

Finding the Fourth Proportional to 78,742,779.18, 108,665,993.97 and 45,710,681.10

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Solution

The fourth proportional to 78,742,779.18, 108,665,993.97 and 45,710,681.10 is: 63,081,296.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,742,779.18 : 108,665,993.97 = 45,710,681.10 : x
  2. Step 2: Convert to fraction form
    78,742,779.18/108,665,993.97 = 45,710,681.10/x
  3. Step 3: Cross multiply
    78,742,779.18x = 108,665,993.97 × 45,710,681.10
  4. Step 4: Simplify right side
    78,742,779.18x = 4,967,196,596,777,193
  5. Step 5: Solve for x
    x = 4,967,196,596,777,193/78,742,779.18
  6. Step 6: Final answer
    x = 63,081,296.45

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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.